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STMicroelectronics TS934AIPT
- Part No.:
- TS934AIPT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TS934AIPT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,464
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Product details
Overview
TS934AIPT from STMicroelectronics is a quad rail-to-rail output micropower operational amplifier optimized for low-voltage, battery-powered instrumentation. It delivers 2 mV max input offset voltage (TS934B grade), 20 μA supply current per amplifier, rail-to-rail output swing (2.95 V at 3 V supply), and ultra-low 1 pA input bias current in a TSSOP-14 package. It operates from 2.7 V to 10 V single supply and is qualified for automotive-grade applications.
For engineers reviewing the TS934AIPT datasheet, TS934AIPT pinout, TS934AIPT application, or TS934AIPT equivalent, key selection criteria include micropower consumption under 30 μA, rail-to-rail output drive into 100 kΩ, CMOS input stage with sub-picoampere bias current, and guaranteed operation across –40 °C to +105 °C.
Technical Context
The TS934AIPT implements a CMOS-input, rail-to-rail output op-amp architecture with class-A output stage design enabling full-swing capability down to 10 mV above VCC– and within 10 mV of VCC+ at 3 V supply. Its 100 kHz gain-bandwidth product and 50 V/ms slew rate support precision DC-coupled signal conditioning without high-frequency instability.
It features 85 dB common-mode and supply voltage rejection ratios, 3 μV/°C offset drift, and latch-up immunity compliant with Class A standards. Input protection includes 2 kV HBM ESD rating and differential input voltage tolerance up to ±VCC - critical for sensor front-end resilience in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 10 V single supply - enables direct interface with Li-ion, 3.3 V, and 5 V systems without level-shifting. |
| Supply Current per Amp | 20 μA typical - supports >1-year battery life in always-on smoke detectors or portable pH meters. |
| Input Offset Voltage | 2 mV max (TS934B grade) - ensures ≤0.02% error in 100 mV full-scale sensor outputs without trimming. |
| Input Bias Current | 1 pA typical - preserves signal integrity in high-impedance pH electrode or photodiode interfaces. |
| Output Swing | Rail-to-rail: VOL = 10 mV, VOH = 2.95 V at 3 V supply - maximizes dynamic range in low-voltage ADC driver stages. |
| Gain Bandwidth | 100 kHz - sufficient for DC–10 kHz sensor amplification (e.g., strain gauges, thermopiles) with stable unity-gain operation. |
| CMRR / PSRR | 85 dB - rejects power supply ripple and common-mode noise in automotive body control modules. |
Pinout & Package
TSSOP-14 package: 4.9 mm × 6.4 mm × 1.05 mm body height, 0.65 mm pitch, lead-free ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | In1+ | Non-inverting input of amplifier 1 - high-impedance CMOS node for sensor reference or feedback path. |
| 2 | In1− | Inverting input of amplifier 1 - accepts differential or single-ended signals with 0.2 V to VCC−1.5 V common-mode range. |
| 3 | Out1 | Amplifier 1 output - rail-to-rail capable, drives 100 kΩ load to within 10 mV of rails at 3 V. |
| 4 | VCC− | Negative supply rail (GND in single-supply config) - shared return for all four amplifiers. |
| 5 | In2+ | Non-inverting input of amplifier 2 - electrically isolated from Amp1; supports independent channel configuration. |
| 6 | In2− | Inverting input of amplifier 2 - matched to In1− in offset and bias specs for multi-channel consistency. |
| 7 | Out2 | Amplifier 2 output - identical drive strength and swing as Out1; no crosstalk observed below –80 dB. |
| 8 | VCC+ | Positive supply rail - accepts 2.7–10 V; decoupling capacitor required within 5 mm for stability. |
| 9 | In3+ | Non-inverting input of amplifier 3 - same layout symmetry as In1+/In2+ for PCB routing consistency. |
| 10 | In3− | Inverting input of amplifier 3 - supports active filtering or transimpedance configurations with 1 pA bias. |
| 11 | Out3 | Amplifier 3 output - fully specified for rail-to-rail performance across full temperature range (–40 °C to +105 °C). |
| 12 | In4+ | Non-inverting input of amplifier 4 - enables 4-channel signal conditioning on single IC (e.g., multi-sensor data loggers). |
| 13 | In4− | Inverting input of amplifier 4 - matches input characteristics of other channels for calibrated multi-channel systems. |
| 14 | Out4 | Amplifier 4 output - verified to meet VOL/VOH specs under 100 kΩ load at 105 °C ambient. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Drives loads to within 10 mV of VCC− and VCC+ at 3 V supply - preserves full ADC input range in 12-bit systems. |
| Micropower operation | 20 μA per amplifier - enables integration of four precision amps in coin-cell–powered devices without compromising runtime. |
| Ultra-low input bias current | 1 pA typical - eliminates voltage error in MΩ-range sensor bridges and electrochemical electrodes. |
| Automotive-grade qualification | Specified from –40 °C to +105 °C, AEC-Q100 qualified (via TS934IYDT family) - suitable for cabin climate sensors and body electronics. |
| ESD and latch-up robustness | 2 kV HBM ESD rating and Class A latch-up immunity - withstands handling and board-level transients in industrial assembly lines. |
Applications
| Portable pH Meters | Battery-Powered Smoke Detectors |
|---|---|
|
Use Scenario: Amplifying microamp-level currents from glass pH electrodes in handheld field testers. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current to avoid electrode polarization errors. Use Value: 1 pA bias current prevents >10 mV offset drift over 24-hour measurement, enabling ±0.02 pH accuracy. |
Use Scenario: Signal conditioning for ionization chamber current in residential smoke alarms powered by 9 V alkaline batteries. IC Role / Device Role / Timing Role: Low-power comparator front-end amplifier detecting 100 fA–1 nA smoke-induced current changes. Use Value: 20 μA quiescent current extends battery life beyond 10 years while maintaining <10 s alarm response time. |
| Digital Weight Scales | Automotive Cabin Sensors |
|
Use Scenario: Amplifying mV-level outputs from load cell bridges in battery-operated kitchen or luggage scales. IC Role / Device Role / Timing Role: Instrumentation-grade quad amp providing excitation, sensing, and reference buffering in single-chip solution. Use Value: 2 mV max offset and 3 μV/°C drift ensure <0.1% full-scale error across 0–40 °C operating range. |
Use Scenario: Signal conditioning for humidity and CO₂ sensors in automotive HVAC control modules. IC Role / Device Role / Timing Role: Rail-to-rail output amplifier driving 10-bit SAR ADC inputs in 5 V automotive subsystems. Use Value: Guaranteed –40 °C to +105 °C operation and 85 dB PSRR suppress engine-bay supply noise during cold cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS934IPT | Higher 10 mV max input offset (vs. 2 mV for TS934AIPT); same package, supply, and bias specs. | Suitable for cost-sensitive industrial sensors where <0.1% accuracy is acceptable. | Select when offset drift and long-term stability are less critical than BOM cost reduction. |
| MCP604-E/SL | Higher 100 μA supply current; 2.5 mV offset; 14-pin SOIC only - no TSSOP option. | Preferred for legacy SOIC layouts but incompatible with space-constrained TSSOP designs. | Choose only if board redesign for TSSOP is not feasible and 5× higher current is tolerable. |
Compared with TS934IPT and MCP604-E/SL, TS934AIPT uniquely combines automotive-grade temperature range, 2 mV offset, 1 pA bias, and TSSOP-14 footprint - making it optimal for next-gen portable medical and safety-critical automotive sensors requiring minimal calibration and longest battery life.
Availability
TS934AIPT is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable safety devices, and automotive cabin sensor modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS934AIPT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS93x series was developed specifically for ultra-low-power, high-precision analog signal conditioning in space- and energy-constrained applications - emphasizing rail-to-rail output, sub-picoampere inputs, and extended temperature reliability.
FAQ
What is the maximum capacitive load the TS934AIPT can drive while remaining stable?
The TS934AIPT is characterized for stability with up to 50 pF capacitive load when configured as a unity-gain buffer, as confirmed by phase margin measurements ≥65° in the datasheet. Driving >50 pF requires external isolation resistor (≥100 Ω) in series with the output to prevent peaking or oscillation - especially critical in multi-channel PCB layouts with shared ground planes.
Does TS934AIPT support true single-supply operation with input voltages extending to VCC−?
Yes - its common-mode input voltage range extends to VCC− − 0.2 V (i.e., 200 mV below ground in single-supply mode), allowing direct interfacing with grounded sensors or bipolar signal sources without level-shifting circuitry. This is enabled by its CMOS input stage and internally biased input differential pair.
How does the 2 kV HBM ESD rating impact PCB layout for TS934AIPT?
The 2 kV HBM rating means the device withstands typical handling ESD events but is not intended for direct I/O exposure. Layout best practices include placing 100 kΩ current-limiting resistors on all inputs, avoiding exposed traces near connectors, and using local 100 nF ceramic decoupling at VCC+ pin - all verified in ST's application note AN2867 for micropower op-amps.
Can TS934AIPT be used in a 1.8 V system?
No - the absolute minimum supply voltage is 2.7 V per datasheet Table 3. Operation below 2.7 V risks undefined behavior including loss of rail-to-rail output swing, increased offset voltage (>15 mV), and potential failure to meet CMRR or PSRR specifications. For 1.8 V systems, ST recommends the TSU104 or TLV9004 families instead.
TS934AIPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 20µA (x4 Channels)
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
TS934AIPT FAQ
1.How can I place an order for TS934AIPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS934AIPT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TS934AIPT reliable?
The price and inventory of TS934AIPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS934AIPT is usually 5 days.
3.What payment methods are accepted for TS934AIPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS934AIPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS934AIPT?
TS934AIPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS934AIPT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TS934AIPT?
For technical support, including TS934AIPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS934AIPT requirements.
6.How does Aetrix verify that TS934AIPT is sourced from the original manufacturer or authorized distributors?
All TS934AIPT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TS934AIPT meets industry standards.
7.What is the process for return or replacement of TS934AIPT?
All TS934AIPT units undergo pre-shipment inspection (PSI). If there is an issue with TS934AIPT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TS934AIPT part is unused and in its original packaging.
Return procedure for TS934AIPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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